Attachment for machines for cutting moldings



(No Model.) 2 Sheets-Sheet 1.

G. P. VIGKEN.

ATTACHMENT FOR MACHINES FOR CUTTING MOLDINGS. No. 366,280. Patented July 12, 188.7.

N. PEI'ERS. Phcwuthe rz har, wmiu mn, D. c.

(N0 Modei.) 2 Sheets-Sheet 2.

G. P. VIOKEN;

ATTACHMENT FOR MACHINES PCB CUTTING MOLDINGS. No. 366.280. Patented July 12, 1887.

i a I UNITED STATES PATENT rrrcn.

GEORGE I. VICKEN, OF CINCINNATI, OHIO.

ATTACHMENT FOR MACHINES FOR CUTTING MOLDINGS.

SPECIFICATION forming part of Letters Patent No. 366,280, dated July 12, 1 887.

I Application filed June 19, 1886. Serial No. 205,633. (No mothl.)

jointly or otherwise, will be apparent from the following description and claims.

In theaccompanyi ng drawi ngs,forming part of this specification, Figure 1 is a perspective view of a machine for cutting moldings provided with my improvements. Fig. 2 is acentral longitudinal sectionef the bed of the machine and of one feature of my invention. Fig. 3 is a top view of thelast-named feature of my invention in position on the machine, parts of the machine being broken away. Fig. 4 is a cross-section, taken at the dotted line Y Y of Fig. 5, of a device showing those features of my invention which enable the machine to cut curved moldings on a concave surface. Fig. 5 is a top view of the device shown in Fig. 4.

Fig. 6 is a section taken at the line XX, Fig.

5. Fig. 7 is the last-named section, with the addition of a plate adapting the machine to be used for cutting moldings on a convex surface. Fig. 8 illustrates in general the curve of the molding cut by means of mechanism embodying the first feature of my invention, the curve being of a. greater or less diameter, as desired.

I have shown this attachment as applied to a machine provided with a vertica1ly-reciproeating knife or cutter; but this feature is not essential to its action, but it may be used where the wood to be cut and its support are caused to reciprocate to and from the knife, and for certain classes of simple moldings where the knife is stationary.

That feature of my invention-viz., which relates to cutting curved moldings on a plane or flat surface, consist-s, essentially, of a plate so constructed and combined with devices for feeding it forward or forward and backward and guiding it so that the plate shall have a curvilinear movement whose radius is in a plane at right angles to the line of the movement of the reciprocating knife. The plate A is flat. Its sides 2 2 are curved, one being con vex and the other concave, and the two curves are parallel to each other. The ends of this flat arc-plate are preferably cut to radii of the curves, and each may be provided with an upwardly-projecting tlange, a. The clampscrews a, passing through the flanges a, serve to hold the piece to be molded in position onthe plate.

Other means for this purpose may be employed instead, when desired. A transverse slot, B, is out through the table or support A. The upper part of this slot is countersunk, forming the recess b. A bolt, D, passes through the slot 13, and is attached to the main table 0 of the machine. The head of this bolt tits in the recess 1), and holds the plate A in position on the table 0. Two guides, E E, are provided, each of which has a curved end. The guide E has a convex curve to fit the concave side of the table A, and the guide E has a concave curve to fit the convex side of the plate A. These guides are attached to stationary parts at the sides of the. machine in a suitable manner. In the machine illustrated they are at tached by means of the loops F to the standards G, supporting the knife-frame.

\Vhen it is desired to out curved moldings on a concave surface, the auxiliary plate H (shown in Figs. 4, 5, and 6,) must also be used in addition to the plate A. 'The plate H is curved, as shown in section in Fig. (l, the curve being greater or less according to the curve ofmolding desired. At each end itis provided with a'fla'nge, h, and a clamp-screw, h, to hold the piece to be cut in position. On each side of its under surface is a rack, 7L2, which meshes with a corresponding rack, a on the top of the'plate A. Instead of countersinking the bolt D it is convenient to provide the under surface of the plate H with a recessflr which accommodates the head of the bolt. The fingers I project horizontally inward. from the guide E and rest on the top of the plate H.

The mode of operation is as follows: WVhen the plate A alone is used, the piece to be cut is clamped to it and.- the machine started. As the table 0 moves it carries the plate A with it. The plate A,in passing between the guides E E, describes a curve similar to the curve of the two guides. The knife being stationary between the two guides, so far as lateral movement is concerned, molds the surface of the piece in curves like the curve in which the plate Amoves. When both plates A and H are used, their motions are combined and their resultant is the cutting of curved lines on a concave surface. As the plate A is moved between the guides E E it carries with it the plate H, and moves this latter bodily in the same curve which the guides E E impart to the plate A. The plate H is in addition guided in its movement by the fingers I. The plate H, passing under these fingers I,is kept by theni at all times tangent to the flat plate A atthe line of the knife. By the combined action of the two plates curved moldings may be cut 011 concave surfaces. By the addition of the plate 3, up-

wardly convex, located upon the plate H and a molding,) will be of that curve imparted to the supportingplate on which the Wood rests by means of the mechanism for guiding itvi-z., as the guides E E, or equivalent means.

What I claim as new and of my invention, and desire to secure by Letters Patent, is

1. The combination of the movable table 0, the flat plate A, having curved edges and secured to said table, and stationary guides E E, arranged to bear against the edges of the plate A, substantially as and for the purposes specified.

2. The combination of the movable tableO, the flat arc-plate A, provided with slot B, se-

cured to said table 0 by the bolt D, and the lateral guides E E, for directing the fiat are p,

combination of the table 0, plate A, having slot B, and provided with racks a bolt D, plate H, provided with racksh flanges h, and clamp-screws h, guides E and E, provided with fingers I, substantially as and for the purposes specified.

5. In a machine for cuttingmoldings, the combination of the fiat arc-plate A, having rack a on its upper surface, and curved plates 3 and H, united to each other with their concave surfaces facing, and the latter plate, H, provided with the rack h", which meshes with the rack a of the plate A, substantially as and for the purposes specified.

' GEO. P. VIOKEN. Witnesses:

M. M. SMITH, JNo. W. STREHLI. 

